Hexagonal round lock nut

Abstract

The utility model relates to the technical field of fastener, especially relates to a hexagonal circular anti-loose anti-uninstall nut, which is composed of a nut body and a sleeve structure, wherein the sleeve structure comprises a sleeve, an inner groove formed on the sleeve, a bead pouring port formed on the sleeve and capable of being communicated with the anti-uninstall groove and the inner groove, and a bead driving structure, the bead driving structure is rotatably arranged in the inner groove, and a steel ball groove capable of accommodating a steel ball is formed between the bead driving structure and the inner groove, when the bead driving structure rotates, the steel ball groove can be communicated with the bead pouring port or be out of position, the steel ball can be first stored in the steel ball groove, and then be sent into the anti-uninstall groove when the bolt is assembled and used, so that the phenomenon of steel ball loss caused by loosening of the sleeve structure can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to a hexagonal circular anti-loosening and anti-disassembly nut. Background Technology

[0002] Anti-loosening and anti-dislodgement nuts (hereinafter referred to as anti-dislodgement nuts) are a special type of fastener. Compared with ordinary nut structures, they can prevent the nut from loosening or falling off due to factors such as vibration and impact. Currently, the anti-loosening effect of anti-dislodgement nuts is mainly achieved through thread characteristics (such as Spirod thread design) and the addition of anti-theft components inside the nut.

[0003] Adding an anti-theft component to the nut refers to creating an anti-theft groove (also called an anti-theft groove) on the inner wall of the threaded cavity of the anti-theft nut, and filling the anti-theft groove with an anti-theft component similar to a steel ball to achieve the purpose of preventing unloading, such as the prior art with authorization announcement number 201636184U and utility model name "locking nut".

[0004] Taking the aforementioned existing technology as an example, although opening an anti-disengagement groove in the threaded cavity and setting an anti-theft component within the anti-disengagement groove can improve the locking effect of the nut, there are drawbacks in actual use and packaging transportation. Since the number of anti-disengagement grooves in the threaded cavity is generally two (or more), and the steel ball, being a small spherical structure, is prone to moving during assembly, it is necessary to package the steel ball and nut separately to prevent loss. Therefore, the applicant has developed a nut kit technology, as detailed in the attached instruction manual. Figure 1 and attached Figure 2 In the figure, a plug sleeve 10 is added to the existing nut 1. After the nut 1 is filled with beads, the plug sleeve 10 is pressed into the threaded cavity 11 to restrict the steel ball 12 in the anti-discharge groove 13, so that the steel ball and nut can be packaged together for easy sales. When this nut kit is used, when the bolt is screwed in from the other end of the threaded cavity (the side filled with beads), the plug sleeve can be gradually pushed away. When the plug sleeve is pushed away, the bolt takes over the plug sleeve in time, and the steel ball will not leave the anti-discharge groove, thus facilitating assembly.

[0005] To facilitate the assembly of nut kits, the applicant also developed an automatic assembly technology for anti-theft nuts and filed a patent application on January 21, 2020. The patent was granted and published on June 4, 2024, with the grant announcement number CN111098114B.

[0006] However, in actual use, it was found that the above-mentioned nut kit technology is not stable during transportation. When the transport vehicle experiences large bumps, the plug sleeve is easy to fall off, which will cause the steel ball to be lost. Moreover, the steel ball is small and difficult to find after it is lost.

[0007] In summary, improvements need to be made to the existing nuts (i.e., nut kits) to address the problem of easily lost steel balls. Utility Model Content

[0008] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a hexagonal circular anti-loosening and anti-disassembly nut, which aims to solve the problems mentioned in the background technology.

[0009] The technical solution of this utility model is achieved as follows: a hexagonal circular anti-loosening and anti-disassembly nut, comprising:

[0010] The nut body has a threaded cavity and at least one anti-dislodgement groove; and a plug sleeve structure;

[0011] The plug sleeve structure of this utility model includes:

[0012] A plug sleeve, adapted to the threaded cavity;

[0013] The inner groove is formed on the plug sleeve;

[0014] The ball filling port is formed on the plug sleeve and can connect the anti-discharge groove and the inner groove;

[0015] The ball-driving structure is rotatably disposed in the inner groove, and a ball groove capable of accommodating at least one ball is formed between the ball-driving structure and the inner groove.

[0016] When the ball-driving structure rotates, it can make the ball groove connect with or misalign with the ball-filling port.

[0017] By adopting the above technical solution:

[0018] The plug sleeve structure of this utility model is provided with a steel ball groove. During assembly, the steel balls are not directly poured into the anti-dislodgement groove, but are placed in the steel ball groove first. During transportation, even if the plug sleeve falls off the nut, the steel balls will always be located in the steel ball groove inside the plug sleeve. When searching, the plug sleeve can be found very easily without having to search for the smaller steel balls.

[0019] When assembling with bolts, the ball drive structure can be rotated to allow the steel balls in the ball groove to enter the anti-dislodgement groove of the nut. Then, after the bolt enters the nut, the plug structure is pushed out to complete the assembly.

[0020] Preferably, the drive bead structure includes:

[0021] The rotating shaft is rotatably positioned within the inner groove;

[0022] A pusher block is installed on the rotating shaft;

[0023] The pusher block has at least one of the steel ball grooves recessed in it.

[0024] Preferably, the wall of the steel ball groove is a curved surface.

[0025] By adopting the above technical solution:

[0026] The ball-driving structure of this utility model consists of a rotating shaft and a pusher block. The circumferential side wall of the pusher block is recessed with a steel ball groove for steel balls to be placed in. When the pusher block rotates, the curved surface on the pusher block (that is, the curved groove wall of the steel ball groove) makes it easier for the steel balls to leave from the filling port and enter the anti-discharge groove.

[0027] Preferably, the pusher block is provided with a shaft cavity through which the rotating shaft passes, and the shaft cavity and the rotating shaft are provided with mutually compatible limiting grooves and limiting ribs.

[0028] Preferably, the plug sleeve comprises:

[0029] The plug body has the inner groove;

[0030] A stopper cap is fitted to one end of the stopper sleeve body, and a rotating shaft is rotatably connected to the stopper cap;

[0031] The plug cover has an opening through which one end of the rotating shaft passes, and the plug sleeve body has several snap-fit ​​parts located in the inner groove opening, and the plug cover has a snap-fit ​​interface for the snap-fit ​​parts to pass through.

[0032] Preferably, the snap-fit ​​portion consists of a snap-fit ​​block and a snap-fit ​​protrusion integrally formed on the snap-fit ​​block.

[0033] Preferably, a limiting protrusion and a limiting groove that are mutually adapted are provided between the pusher block and the bottom of the inner groove.

[0034] Preferably, a clamping plate is fixedly connected to the rotating shaft, and a clamping spring is provided between the clamping plate and the pusher block.

[0035] By adopting the above technical solution:

[0036] The plug sleeve structure of this utility model is a detachable structure, that is, the plug sleeve body and the plug cap can be disassembled. Therefore, after use, the plug sleeve structure can be recycled and reused. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the existing technology;

[0039] Figure 2This is a schematic diagram illustrating the principle of bead filling in the prior art;

[0040] Figure 3 This is a schematic diagram of the structure of a specific embodiment 1 of the present utility model;

[0041] Figure 4 This is a schematic diagram of the plug sleeve structure in specific embodiment 1 of this utility model;

[0042] Figure 5 This is a cross-sectional view of the plug sleeve structure in specific embodiment 1 of this utility model;

[0043] Figure 6 for Figure 5 AA section view in the middle;

[0044] Figure 7 for Figure 5 BB section view in the middle;

[0045] Figure 8 This is a schematic diagram of the structure of a specific embodiment 2 of the present utility model;

[0046] Figure 9 for Figure 8 CC section view in the image. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0048] Before formally describing the embodiments of this application, a brief description of the prior art anti-loosening and anti-disassembly nuts (i.e., existing nut kit technology) is given as follows:

[0049] Please refer to Figures 1-2 The existing anti-loosening and anti-disengagement nut includes a nut 1 (i.e., the nut body) and a plug sleeve 10. The nut 1 is provided with an anti-disengagement groove 13, and a steel ball 12 is provided in the anti-disengagement groove 13. During assembly, firstly, one end of the plug sleeve abuts against one end of the nut thread or the plug sleeve is partially inserted into the thread cavity 11 of the nut. Note: When the plug sleeve is inserted into the thread cavity 11, it does not directly close the anti-disengagement groove. At this time, the groove opening of the anti-disengagement groove is still open. Then, the steel ball is put into the thread cavity from the other side of the nut, and the steel ball is guided into the anti-disengagement groove. Then, the plug sleeve is fully inserted into the thread cavity. At this time, the plug sleeve closes the anti-disengagement groove and prevents the steel ball from leaving the anti-disengagement groove.

[0050] When in use, the bolt is screwed into the end of the nut away from the plug sleeve, and the plug sleeve is pushed away from the nut. In this way, when the nut is assembled with the bolt, it can take over the position of the plug sleeve in time, and the steel ball will not easily leave the anti-disengagement groove when the bolt and nut are assembled.

[0051] Example 1

[0052] like Figures 3-7 As shown, this embodiment discloses a hexagonal circular anti-loosening and anti-disengagement nut. Similar to the prior art, it includes a nut body 1, which has a threaded cavity 10. The inner wall of the threaded cavity 10 is provided with an anti-disengagement groove 13, and a steel ball 12 is provided in the anti-disengagement groove 13.

[0053] Unlike existing technologies, the plug sleeve structure 3 in this embodiment can be inserted into the threaded cavity to cooperate with the nut body. The plug sleeve structure includes:

[0054] The plug sleeve 30 is adapted to the threaded cavity 10;

[0055] The inner groove 31 is formed on the plug sleeve 30;

[0056] The ball filling port 32 is formed on the plug sleeve 30 and can connect the anti-discharge groove 13 and the inner groove 31;

[0057] The ball-driving structure is rotatably disposed in the inner groove 31, and two steel ball grooves 33 are formed between the ball-driving structure and the inner groove 31, each steel ball groove 33 being able to accommodate one steel ball 12.

[0058] When the ball-driving structure rotates, it can make the ball groove 33 connect with or misalign with the ball filling port 32.

[0059] In this embodiment: the drive bead structure includes:

[0060] The rotating shaft 40 is rotatably disposed in the inner groove 31;

[0061] Push block 41 is installed on rotating shaft 40;

[0062] The pusher block 41 has two recessed steel ball grooves 33.

[0063] In this embodiment, the pusher block 41 and the rotating shaft 40 are integrally formed.

[0064] In this embodiment, the wall of the steel ball groove 33 is set as a curved surface 33a.

[0065] In this embodiment: the plug sleeve 30 includes:

[0066] The plug body 300 has the inner groove 31;

[0067] The plug cap 301 is fitted to one end of the plug sleeve body 300, and the plug cap 301 is rotatably connected to the rotating shaft;

[0068] The plug cover 301 has an opening through which one end of the rotating shaft 40 passes, and the plug sleeve body 300 has a plurality of snap-fit ​​parts 300a located in the groove of the inner groove 31, and the plug cover 301 has a snap-fit ​​interface 301a through which the snap-fit ​​parts 300a pass.

[0069] In this embodiment: the snap-fit ​​portion 300a consists of a snap-fit ​​block 300b and a snap-fit ​​protrusion 300c integrally formed on the snap-fit ​​block 300b.

[0070] In this embodiment, the inner wall of the movable opening is recessed, a support block 40a that can rotate at the movable opening is integrally formed on the rotating shaft 40, and a rotating block 40b is provided at one end of the rotating shaft 40.

[0071] In this embodiment, the side wall of the pusher block 41 is provided with an elastic card 41a, and the inner side wall of the inner groove 31 is provided with a slot 31a for the elastic card 41a to be inserted. One end of the elastic card 41a is connected to the pusher block 41 (e.g., one end of the elastic card is integrally formed with the pusher block), and the other end is spaced apart from the pusher block 41.

[0072] In this embodiment, the material of the snap-fit ​​part and the elastic card is the same as that of the existing buckle, which is engineering plastic, such as PP (polypropylene) or PA (nylon).

[0073] refer to Figures 3-7 The principle of this embodiment is:

[0074] In this embodiment, during assembly, the plug body and the plug cap are taken, and the snap-fit ​​interface and snap-fit ​​part on the plug cap and the plug body are used. When the plug cap and the plug body are assembled, the snap-fit ​​part passes through the snap-fit ​​interface and comes out from the other end of the snap-fit ​​interface, thereby using the snap-fit ​​protrusion to fasten the plug cap, thereby completing the assembly.

[0075] When filling the ball groove with balls, after the plug body and plug cap are assembled, the rotating shaft is rotated to align the ball groove with the ball filling port. The ball is then placed into the ball groove through the ball filling port. Subsequently, the rotating shaft is rotated to misalign the ball groove with the ball filling port, thus completing the ball filling process.

[0076] Another method of filling the ball in this embodiment is to put the steel ball into the inner groove before assembling the plug body and the plug cap. At this time, the worker closes the filling port by hand. Then, the plug cap and the plug body are assembled. During assembly, the steel ball groove is aligned with the steel ball by rotating the shaft, and the assembly is completed smoothly. During the assembly process, the shaft is rotated to make the steel ball groove misalign with the filling port.

[0077] After the bead filling is completed in the plug sleeve structure, the plug sleeve structure is assembled with the nut body, and the bead filling port after assembly corresponds to the anti-discharge groove.

[0078] In this embodiment, when the elastic card is inserted into the slot, the steel ball groove and the ball filling port are misaligned, and the elastic card and the slot can restrict the rotation of the pusher block. Therefore, the steel ball will not be easily lost from the ball filling port. Even if the plug sleeve structure and nut assembly fall off during transportation, the plug sleeve structure can be quickly found.

[0079] In this embodiment, during assembly with the bolt, the shaft is first rotated to align the ball groove with the ball filling port. As the pusher block rotates, the elastic card is squeezed and disengaged from the slot. Simultaneously, the wall of the ball groove pushes the ball. Once the ball groove is connected to the ball filling port, the ball is pushed from the filling port into the anti-discharge groove by the wall of the ball groove (i.e., the pusher block). Then, the pusher block continues to rotate, causing the ball groove and the ball filling port to misalign again, thereby sending the ball into the anti-discharge groove. Subsequently, the bolt enters from the threaded opening on the other side of the nut and pushes away the plug structure, completing the assembly.

[0080] Example 2 differs from Example 1 in that:

[0081] like Figures 8-9 As shown, in this embodiment, the pusher block 41 is provided with a shaft cavity 50 through which the rotating shaft 40 passes, and mutually compatible limiting grooves 51 and limiting ribs 52 are provided on the shaft cavity 50 and the rotating shaft 40. The limiting groove 51 extends axially on the side wall of the shaft cavity 50, and its two ends penetrate through the two end openings of the shaft cavity.

[0082] In this embodiment: the bottom of the pusher block 41 and the inner groove 31 are provided with mutually compatible limiting protrusions 60 and limiting grooves 61.

[0083] In this embodiment: a clamping plate 7 is fixedly connected to the rotating shaft 40. The clamping plate 7 is integrally formed with the rotating shaft 40. A compression spring 71 is provided between the clamping plate 7 and the pusher block 41. The compression spring can be a low-stiffness spring, such as the spring on a pen clip, and it needs to meet the following requirements:

[0084] When the worker does not rotate the shaft, the compression spring can press the pusher block; when the user rotates the shaft, the pusher block can squeeze the compression spring, so that the limiting protrusion of the pusher block can smoothly disengage from the limiting groove. Any compression spring that meets the above requirements can be used in this embodiment.

[0085] In this embodiment, there are two limiting grooves 61, which are spaced apart at the bottom of the inner groove 31. Similarly, there are two limiting protrusions 60 of the pusher block 41, which are also spaced apart.

[0086] In this embodiment, the pusher block does not have an elastic card.

[0087] refer to Figures 8-9 The principle of this embodiment is:

[0088] During assembly, the worker holds the plug body and covers the filling port with their hand, then puts the steel ball into the inner sleeve, followed by the pusher block. The pusher block is rotated until the limiting protrusion on the pusher block is engaged in the limiting groove, thus completing the adjustment of the pusher block. At this time, the steel ball is located in the steel ball groove of the pusher block, and the steel ball groove is misaligned with the filling port.

[0089] Next, insert the compression spring, align the rotating shaft on the plug cap with the shaft cavity of the pusher block, and insert the rotating shaft into the shaft cavity of the pusher block. The positioning of the limiting rib and the limiting groove allows the snap-fit ​​interface and snap-fit ​​part on the plug cap to be directly aligned, which facilitates the assembly of the plug cap and the plug sleeve body. After assembly, the compression spring is controlled by the compression plate to press the pusher block into the inner groove, so that the pusher block will not move easily.

[0090] When used in conjunction with bolts, the plug sleeve structure is assembled with the nut body. When the shaft rotates, the pusher block is driven to rotate by the cooperation of the limiting rib and the limiting groove, and the limiting protrusion on the pusher block leaves the limiting groove. The pusher block squeezes the compression spring and moves closer to the clamping plate. Then the pusher block rotates smoothly until the steel ball is discharged from the ball filling port into the anti-discharge groove of the nut body. It continues to rotate until the limiting protrusion of the pusher block returns to the limiting groove, completing the conveying of the steel ball into the anti-discharge groove.

[0091] Then the bolt is screwed in from the other end of the nut, pushing out the plug structure to complete the assembly and use.

[0092] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hexagonal circular anti-loosening and anti-disassembly nut, comprising: The nut body (1) has a threaded cavity (10) and at least one anti-discharge groove (13); The plug sleeve structure (3) is characterized in that: the plug sleeve structure (3) comprises: A plug sleeve (30) is fitted to the threaded cavity (10); The inner groove (31) is formed on the plug sleeve (30); The ball filling port (32) is formed on the plug sleeve (30) and can connect the anti-discharge groove (13) and the inner groove (31). The ball-driving structure is rotatably disposed in the inner groove (31), and a ball groove (33) is formed between the ball-driving structure and the inner groove (31) to accommodate at least one ball (12). When the ball drive structure rotates, it can make the ball groove (33) connect with or misalign with the ball filling port (32).

2. The hexagonal circular anti-loosening and anti-disassembly nut according to claim 1, characterized in that: The drive bead structure includes: The rotating shaft (40) is rotatably disposed in the inner groove (31); A pusher block (41) is installed on the rotating shaft (40); The pusher block (41) has at least one of the steel ball grooves (33) recessed on it.

3. A hexagonal circular anti-loosening and anti-disassembly nut according to claim 2, characterized in that: The wall of the ball groove (33) is curved (33a).

4. A hexagonal circular anti-loosening and anti-disassembly nut according to claim 2 or 3, characterized in that: The pusher block (41) is provided with a shaft cavity (50) through which the rotating shaft (40) passes, and mutually compatible limiting grooves (51) and limiting ribs (52) are provided on the shaft cavity (50) and the rotating shaft (40).

5. A hexagonal circular anti-loosening and anti-disassembly nut according to claim 4, characterized in that: The plug sleeve (30) includes: The plug body (300) has the inner groove (31); A plug cap (301) is fitted to one end of the plug sleeve body (300), and a rotating shaft is rotatably connected to the plug cap (301); The plug cover (301) has an opening for one end of the rotating shaft (40) to pass through, and the plug sleeve body (300) has a plurality of snap-fit ​​parts (300a) located in the groove of the inner groove (31), and the plug cover (301) has a snap-fit ​​interface (301a) for the snap-fit ​​parts (300a) to pass through.

6. A hexagonal circular anti-loosening and anti-disassembly nut according to claim 5, characterized in that: The snap-fit ​​portion (300a) consists of a snap-fit ​​block (300b) and a snap-fit ​​protrusion (300c) integrally formed on the snap-fit ​​block (300b).

7. A hexagonal circular anti-loosening and anti-disassembly nut according to claim 6, characterized in that: The bottom of the pusher block (41) and the inner groove (31) are provided with mutually compatible limiting protrusions (60) and limiting grooves (61).

8. A hexagonal circular anti-loosening and anti-disassembly nut according to any one of claims 5-7, characterized in that: A clamping plate (7) is fixedly connected to the rotating shaft (40), and a clamping spring (71) is provided between the clamping plate (7) and the pusher block (41).

Images